Carbureter.



J.BRUUN.

GABBUBETER. APPLIOAIIOH TILED JUNE 19 1911.

Patented May 5, 1914.

2 sums-sum 1.

J. BRUUN.

OARBURETIBR. -APPLIOATION FILED JUNE 19, 1911.

Patented May 5,1914.

2 sums-sum 2.

.nuunnmwlllll WITNESSES UNITED STATES PATENT OFFICE.

JACOB BRUUN, OF TOLEDO, OHIO,' ASSIGNOR TO THE KOLO CARBURETER COMPANY, 0F TOLEDO, OHIO, A CORPORATION OF OHIO.

CARBURETER.

Specification of Letters Patent.

Patented May 5, 1914.

Application filed June 19, 1911. Serial No. 634,129.

able others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relatesto carbureters of the.

class particularly adapted for the use of either gasolene or kerosene as a fuel.

The object of my invention isthe provision of an improved and highly efficient carbureter of this character, which is economical in its consumption of fuel, capable of be-- mg easily and quickly changed to either a gasolene or kerosene feed, and is easy and simple in its operation. i

A further object of my invention is the provision, in combination with a carbureter adapted to be heated by the exhaust from an engine, of means which is easily and quickly -operable to direct .the exhaust through the carbureter in contact with the walls of the air passages and carbureting chamber t'o heat them to effect a more thorough vaporization of kerosene or other low gravity hydrocarbon oils when used as a fuel, or to direct the exhaust around the carburetor to prevent a too highly heating of such walls and consequent improper working of the carburetor.

The invention is fully described in the following specification, and while, ,in its broader aspect, it is capable of embodiment in numerous forms, a preferred embodiment thereof .is illustrated in the accompanying drawings, in which,.

Figure 1 is a vertical section of the carbureter on the line a? m in Fig. 2. Fig. 2 is a top plan view thereof. with parts broken away and in section. Fig. is a top plan view of the liquid fuel valvewith the liquid fuel feeding portions of the carbu refer associated therewith. Fig. 4 is a side elevation of the valves with the suction valve partly in section. Fig. 5 is an inner side elevation of the inner end of one of the two-way nipples for the exhaust, with the valve associated therewith, and Fig. 6 is a face view of the valve in the exhaust passa e.

Referring to the drawings, 1 designates the external casing of the carbureter, which is preferably but not necessarily of circular form and has itsbottom provided with a central opening 2 and its top portion open and provided with an internal annular re stricting flange 3 which forms a central. -o pen1ng preferably larger than and in ver- 1 heal register with the opening 2 in the casing bottom. A part 4, in the present instance of tubular form, is disposed centrally within the chamber formed by the casing 1 and has its upper end open and fitting within the opening in the flange 3, and its lower end provided with a nipple 5 which pro- ]ects through the opening 2 in the casing bottom. The part 4 forms a carbureting-- chamber 6 in the upper end portionv of which is located a screen or perforated par ti-tion 7 for assisting in breaking up the liquid fuel passing therethrough. A butterfly yalve Sis located within the nipple 5 for controlling the passage of vaporized. fuel therethrough to the engine with which such nipple is connected.

A' cap 9 is mounted on the upper end of the casing l and coiiperates with such casing end-and with the flange 3 to form an airchamber 10. Air is admitted, in the present instance, to the chamber 10'through a plurality of tubes 11 extending vertically through the annular chamber 12 provided within the casing 1 around the part 4 and have their lower ends opening through the bottom of said casing and their upper ends opening through the flange 3. A cylindrical casing 13, forming a valve chamber, is

suspended from the central portion of the cap 9 and fits at its lower end within the upper endof the part 4 and cooperates with the chamber 6 in said part to form the carbureting-chamber of the carbureter. The upper end portion of the casing 13 is conilllll cally contracted to form an internal conicalvalve seat and the upper end thereof opens into theair-chamber 10. l

A rotaryliquid fuel control valve 14 seats within the conical portion of the valve caswhich in the present instance, has its upper x 18 through the conical rim portion thereof 19 isof suitable length to substantially ex- .valve 14 one passage may be cut into comwith the gasolene passage ingand is carried by a hollow stem 15,

end portion enlarged and mounted for rotary movements within a registering opening in the cap 9. The valve 14: is held yieldingly seated by the cooperating action of a nut 16, which is threaded on the outer end of the stem 15, and a bowed spring washer 17 which is interposed between said nut and the top of the cap 9. The conical rim portion of the valve 1 1 is carried by spokes radiating from the stem 15 to provide openings through the valve in register with the air intake opening in the top of the casing 13. The valve 14: has a fuel discharge portand leading from the outer endof this port in one direction circumferentially around a portion of the valve surface is a groove 19 which gradually diminishes in depth outwardly from such port. The groove l-9 is adapt-ed upon a tiirning of the valve 14 to be selectively placed into or out of register with fuel passages 20 and 21 provided through the conical portion of the valve casing 13 as best shown in Fig. 3. These passages are formed in extensions 22 from the casing 13 and such extensions are adapted at their outer ends for the connecting therewith of fuel supply tubes one of which leads from a suitable source of gasolene supply and in the present instance connects with the fuel passage 20 whilethe other leads to a suitable source -of kerosene supply and connects with the passage 21. The groove tend from one to the other of the passages 20 and 21 so that upon a turning of the munication with said groove immediately upon a cutting out of the other. The arrangement of the port 18, groove 19 and passages 20 and 21 is preferably such that upon a turning of the valve 14 in the direction indicated by the arrow in Fig. 3 from closed or shut-off position the restricted end of the groove 19 will. first move into register with the gasolene passage 20, the permissible flow of such-liquid fuel being increased as the port 18 moves toward said passage When the associated engine has been running a sul'iicient length of time under gasolcne as a fuel to heatv the carburetor, as hereinafter described, to a temperature at which kerosene can be ellicientlv used as a fuel. the valve 14: is turned to move the small end of the groove 19 into cmnmunication with the kerosene passage 21 and the port (and of said groove out of communication The admission of air and liquid fuel to the carlmretingchamber is controlled by a disk-valve 23 which has a conical rim portion adapted to seat Within the conical rim portion of the valve 14, thus serving when seated to close the communication between the carbureting-chamber and the fuel supply port 18 and also the communication between said chamber and the'air chamber 10. The

stem 21 of the valve 23 projects upwardly through the hollow stem 15 and the valve is held normally seated by the action of a coiled compression spring 25, which has its ends thrust against a portion of the stem 15 and a nutcarried on the outer end of the stem 24. A lever 26 projects laterally from the outer end of the stem 15 which projects from the control valve 14 to facilitate a turning of such valve, and such turning is resisted by a spring pressed 'detent or pin 27 which is carried by said lever and coacts with a notched segmental surface 28 on the,

top of the cap 9.

The'exhaust from the associated engine is I utilized to heat the carburetor and such exhaust is .piped into one side of the annular chamber 12 within the casing and has itsexit from the opposite side of such casing thus causing the exhaust to pass around the chamber 12 to efliectaheating of the air tubes 11 and a consequent heating of the air in its passage therethi'ough to the air chamber 10 and also a heating of the walls of the carbureting-chamber.. A portionof such exhaust also passes through an angular passage 29 which is provided through the part 4 to effectually heat the interior of the carbureting-chamber.

As it is not desirous to heat the carbureter as highly when using gasolene as a fuel as when using kerosene it is important in the practical operation of a carburetor of this class to provide means for by-passing the exhaustaround the carburetor to prevent a too highly heating of the carbureter when gasolene is being used. For this purpose the inlet and outlet passages for the exhaust to and from the chamber 12 are each provided with two-way nipples'SO and 31, respectively, one branch of each of which com-' municates with the circulating chamber 12 of the carburetor while the other branches of the two nipples are connected by a pipe 32. The passage of the exhaust through one or the other of the branches of the inlet nipple 30 is controlled by a valve 33 which is pivoted in the nipple 30 intermediate the two outlets of lhenipple and below the same, as indicated at Set in Fig. 5, and swings in a narrow elongated passage 35, which provided inthe inner side of the nipple 30 and registers at its ends with the outlet. passages thereof. It will be apparent by reference to Figs. 2, 5 and 6 that upon a swinging of the valve 33 in one direction it will uncover one outlet passage of the nipple 30 and close the The shaft 34- upon other, and vice versa. wlnch the val ve-33 s mounted pro ects withits outer end. The valve 33 may also be regulated to partially open each of the outlet passages of the nipple 30 to a desired extent to permit a division of the exhaust gases whereby a part passes through the carbureter and the remaining part through the by-pass 32.

In the use, of my improved carbureter the valve 14 is first moved to place its groove 19 in register with the gasolene'feed passage 20, more or less of a rich mixture being acquired by moving the valve port 18 closer to or farther from the feed passage 20. During the running of the engine with gasolene as a fuel the exhaust therefrom is permitted to pass through the passage 12 around the air tubes 11 and walls of the carbureting chamber. lVhen these parts have become heated to a temperature proper for the efficient use of kerosene, orother hydrocarbon oils of lower specific gravity than gasolene,

the valve 14 is turned to close the gasolene' fuel passage 20 and place the groove 19 therein into register with the passage 21 for kerosene or other low grade hydrocarbon oil. The suction of the engine effects an opening of the valve 23 to permit the suction of air and liquid fuel in proper proportions into the carbureting chamber from the air chamber 10 and valve port 18 which latter is in communication with one or the other of the liquid fuel passages 20-21. The air and liquid fuel-are thoroughly mixed and vaporized within the carbureting chamber, being broken up by their passage through the perforated disk 7, and the vaporizing of the low grade hydrocarbon oil, when the same is used, being materially facilitated by the heated condition of the walls of the carbureting chamber as is apparent.

I wish it understood that my invention is not limited to any specific construction or arrangement of the parts except in so far as such limitations are specified in the claims.

Having thus described my invention,

1 what I claim as new and desire to secure by Letters Patent, is,-

1. In a carbureter, a carbureting-chamber, a plurality of passages leading to said chamber and in communication with different grades of hydrocarbon oils, a liquid fuel valve operable to selectively control the admission of liquid fuel to said chamber from any of said passages, air supply means for said chamber, and a valve seating against the liquid valve operable by suction to admit air to the carbureting-chamber and to coiiperate with said liquid fuel valve to admit liquid fuel thereto.

2. In a carbureter, a carbureting-chamber,

said chamber having communication with a source of air supply and with a plurality of liquid fuel passages, and a plurality of va ves seating one against the other and operable to admit air to said chamber through one and around the other thereof and to selectively admit liquid fuel thereto from any of said passages.

3. In a carbureter, a carbureting-chamber having communication with asource of air supply and a plurality of sources of liquid fuel supply, and cooperating independently operable valves seating one against the other for controlling the admission of air and liquid fuel to said carbureting-chamber,

4. In a carbureter, a carbureting-chamber having communication with a source of air supply and with a plurality of sources of liquid fuel supply, and a pair of abutting concentric valves which are independently operable to admit air and liquid fuel to said carbureting-chamber and to contro-l.'.the quantity of feed of the liquid fuel from said sources of liquid fuel supply.

5. In a carbureter, a carbureting-chamber having communication with a source of air supply and with a plurality of sources of liquid fuel supply, a rotary liquid fuel valve controlling the feed of liquid fuel to said chamber from the sources of supply, and a disk valve seating within said liquid fuel valve and cooperating therewithto control the liquid fuel feed and also the admission of air to the carbureting-chamber.

6. In a carbureter a carbureting chamber, an air-chamber in communication therewith, a plurality of liquid fuel passages leading to said carbureting-chamber, a rotary valveoperable to selectively control the feeding of .liquid fuel to the carbureting-chamber from said passages and to regulate the quantity of such feed, said "alve having an opening throughwhich air passes from one to the other of said chambers, and a disk valve seating within said rotary valve to normally close the communication between the carbureting-chamber and said liquid fuel passages and also between the carbureting-chamber and the air-chamber and operable by suction to permit a drawing of liquid fuel and air into the carbureting-chamber.

7. In a carbureter, a carbureting-chamber, an air-chamber, a plurality of liquid fuel passages, and a double valve the parts of which seat one against the other and are in-' dependently operable to control the passage of airand liquid fuel to the carburetingchamber from said air-chamber and said passages, one of said valve parts having an air passage therethrough.

8. In a carbureter, a carbureting-chamber, an air-chamber, a plurality of passages in communication with differntsourcesof fuel supply, and a double valv the parts of which cooperate to control the admission of air and liquid fuel to the car;

bursting-chamber from the airrchamber and from said passages, one of the valve parts being manually operable to control the quantity of liquid fuel feed and theother valve part being automatically operable by suction action.

9. In a carbureter, a carbureting-chamber having a valve seat therein, a passage leading to said seat from a source of liquid fuel supply,.a rotary valve for seating against said seat, said valve having a port therethrough in communication with the carburetingchamber and a segmental groove extending from said port around the valve and gradually diminishing in cross sectional area. outwardly from said port, said groove being arranged to register with said passage when the valve is moved into proper position therefor, an air inlet to said chamber, and means normally closing said valve port and automatically operable by suction action to uncover said port and air inlet to the carbureting chamber.

10. In a carbureter, a carbureting-chamber, a plurality of passages leading thereto from different sources of liquid fuel supply. a valve having a port opening into said chamber and a groove extending from said port and diminishing in area longitudinally thereof outwardly from the port, said valve being movable to selectively place said groove into register with said passages, an air inlet to said chamber, and a member normally closing said port and actuated by suction action to uncover said port and to open communication between the atmosphere and said chamber through theair inlet.

11. In a carbureter, a carbureting chamber in communication with a source of air supply and a plurality of sources of liquid fuel supply, and a valve having relatively rotatable contacting parts which cooperate to control the admission of liquid fuel and air -to said chamber from the respective sources of supply.

- 12. In a carbureter, a carbureting chamber having communication with a source of air supply and with a plurality of sources of liquid fuel supply. an annular valve and a disk valve cooperating to control the admission of liquid fuel and air to saidcham her from the sources of supply, the air passing through the annular valve in its passage to the chamber.

13. In a carbureter, a carbureting chamber having communication with of sources of liquid fuel supply and with a source of air supply. a plurality of valves seating one within the other and cooperating to control the admission of liquid fuel and air to said chamber from. the respective sources of supply, one of said valves being operable to regulate the quantity of How I Copies of this patent may be obtained for a plurality valve normally of liquid fuel from either source of supply to said chamber. v

14. In a carbureter, a carbureting chamber, a passage in communication with a source of liquid fuel supply, a passage forming an air inlet to the carbureting chamber, and a plurality of relatively movable contacting valves for coacting one against the 'other to control the admission .of liquid fuel and air to said chamber,

sage being disposed at the opposite side of 7 0 the air inlet pasboth of said valves to said chamber.

15. In a carbureter, a carbureting chamber in communication with a source of liquid fuel supply and a source of air supply,

a valve having anair passage. therethrough operable to completely close the communication between said chamber and the source of liquid fuel supply or to regulate the quantity of feed of liquid fuel to said chamber, and a valve seating against a part of said first mentioned valve for cooperating therewith to control the liquid fuel supply to the carbureting chamber and opening under suction to admit air to said chamber.

16. In a carbureter, a carbureting chamher, a passage opening communication between a source of liquid fuel supply and said chamber, an air inlet passage to the chamber, a valve having a port movable into or out of register with the liquid fuel passage by a movement of the valve, and a second closing the port in said first valve and the air passage and movable by suction action to open communication bctween both said port and the air passage with saiid chamber. I

17 In a carbureter, a carbureting chamber having communication with a source of fuel supply and with a source of air supply, and a valve having relatively rotatable parts one of which forms a seat for the other part and has a port movable into or out of communication with the source of liquid fuel suppl and leading to the scat formed thereby for the other valve part, said other valve part noru'ially closing the com- 1 munication of both said port and source of air supply with the carbureting chamber and movable by suction action to open such communication.

In testimony whereof, I have hereunto signed my name to this specification in the presenccof two subscribing witnesses.

JACOB BRUUN.

VVituesscs:

C. W. OWEN, M. I. Orrunnum.

twe cents each, by addressing the Commissioner of I'atents,

Washington. D. C. 

